Box2D is a 2D physics engine for games, for more related help, please visit http://www.box2D.org.
Now, in WaveEngine 2.3.0, we have integrated Box2D as 2D Physic engine. In previous versions, we use Farseer Physics (C# reimplementation of Box2D https://farseerphysics.codeplex.com). Farseer is a great tool, but we decided to step forward and include a 100% native physic engine.